Improved mode of inserting artificial teeth



@that DVVARD B. GOODALL, QF PORTSMOUTH, NEW HAMPSHIRE.

'Leners Pamlvo. 85,653, daad January 5, 1869.

IMPROVIED MODE OF INSERTI'NG- ARTIFICIAL TIIETH.A

To all whom 'it Imay concern Be it known that 1, EDWARD B. GOODALL, ofPorts.

mouth, in the county of Rockingham, and State of New Hampshire, haveinventeda new and improved Mode of Constructing and Inserting Paitial orWhole Sets of Artificial Teeth, which I shall call Goodalls Elastic orSpring-Plate, and I do hereby declare that the following is a full,precise, and exact description thereof, reference being had to theaccompanying drawings, in which-f- Figure 1 represents aview of the roofof the mouth, ora cast thereof, with the front teeth or incisorsremoved.

Figure 2 is a view of two articial front teeth, secured in or to a plateconstructed in accordance with -my invention.

. Figure 3 is a view of the cast shown in iig. l, with the plate shownin fig. 2 inserted;

. The nature of my invention consists in making plates of an elastic orspringy material, and of such shape or form that, While adaptingitselfto the form of the mouth,

it will be held in its place when inserted in the mouth, by itselasticity, i. c., without clasps or suction, and this is accomplishedby cutting away from plates, as ordinarily made of an elastic substance,the roof or upper part thereof, leaving wings or spring-like arms, or byforming the plate holding the artificial teeth of an elastic strip,fitting the sinuosities of the roof of the mouth, at or near that partof themouth which corresponds Vto the roots of the teeth, substantiallyas shown in the drawings.

' To enable others to make and use my said inven? tion, I shall nowproceed to describe the manner in which the same is or may be carriedinto effect.

After obtaining the plaster-cast of the mouth, in the manner heretoforepractised, I cut out from the portion of the plaster-cast which'corresponds to the roof of the mouth, more. or less, according to theshape of the mouth, for the formation of win gs of requisite form andthickness or elasticity. Then, if rubber be Yused Afor the baseI take apure and highly-elastic compound,

' and pack it in its plastic condition, as usual, and vul` canizeituntil the plate becomes hard and elastic. By i heating-the plate sovulcanized, Ican shape it to obtain a greater or less degree ofelasticityat pleasure. In connection with the elastic plate,such asdescribed,

another improvement may be used, viz, a bevel-edge on the palatalsurface of the plate of partial sets, and posterior surface of wholesets, which embeds itself into the mouth. The bevel-edge is made bycutting, with' a knife, the palatal surface of the cast aboutonesixteenth of an inch, more or less, according to the sponginess ofthe mouth, and by' then packing theI plate (if of rubber) as usual. y

I sometimes festoon the plate when packed, before vulcanizing to thecast and necks of the teeth, down near to the cast, so as to leave themprojecting from the plaster the thickness'of the plate to be used,sothat it will t exactly to the neck of each of the natural teeth, and beheld inl position bythe elasticity of the plate, as aforesaid.

To .secure th'e plate in the mouth, it is only necessary to slightlycompress it, by placing the thumb on onev arm or wing of the plate, andthe fore-linger on the' other, and setting the plate in its proper placeand releasing it. The plate will be thus securely and rmly", held, andnone of the discomforts attending clasps will be felt, while nausea orimpaired taste, or defective speech, or food working under the plate,which more or less attend the use of all otherplates, will bereffectually obviated. I

Ola-im.

